Opinion by Judge HAWKINS; Partial Concurrence and Partial Dissent by Judge NOONAN.
HAWKINS, Circuit Judge:
These consolidated appeals stem from the November 2003 Valdivia Permanent Injunction (“the Injunction”) — based on a stipulation between Jerry Valdivia (“Valdivia”) and a class of similarly situated California parolees1 (“Plaintiffs”), and Governor Arnold Schwarzenegger and the State of California (collectively “the State”)— prescribing procedures for parole revocation hearings in California. Here, the State appeals two post-injunction orders: (1) the March 25, 2008 order (“March 2008 order”) adopting the Injunction-related recommendations of the court-appointed Special Master regarding the use of hearsay evidence in parole revocation hearings; and (2) the March 26, 2009 order (“March 2009 order”) denying the State’s motion to modify the Injunction to conform to the voter promulgated statute, CaLPenal Code § 3044, formerly California Proposition 9 (“Proposition 9”).
[987]*987Bound by United States v. Comito, 177 F.3d 1166 (9th Cir.1999), we affirm the March 2008 order. Because the March 2009 order made no express determination that any aspect of the California parole revocation procedures, as modified by Proposition 9, violated federal constitutional rights, nor any determination that the Injunction was necessary to remedy a constitutional violation, we vacate and remand the March 2009 order for the district court to make that determination and to reconcile the Injunction and Proposition 9.
Background Facts & Procedural History
In May 1994, Plaintiffs challenged the constitutionality of parole revocation procedures under the Fourteenth Amendment’s right to due process, as defined in Morrissey v. Brewer, 408 U.S. 471, 487-90, 92 S.Ct. 2593, 33 L.Ed.2d 484 (1972), and Gagnon v. Scarpelli, 411 U.S. 778, 786, 93 S.Ct. 1756, 36 L.Ed.2d 656 (1973). The district court granted partial summary judgment in favor of Plaintiffs, holding that California’s parole revocation hearing system violated their procedural due process rights. Valdivia v. Davis, 206 F.Supp.2d 1068, 1078 (E.D.Cal.2002). The parties later agreed to the Injunction, which limited “the use of hearsay evidence ... by parolees’ confrontation rights in the manner set forth in ... Comito.”
The March 2008 order
In response to the parties’ attempts to clarify the Injunction in light of United States v. Hall, 419 F.3d 980 (9th Cir.2005), and after additional briefing and a hearing, the Special Master recommended: (1) the State should be found in violation of the Injunction; (2) all hearsay is subject to Comito balancing — weighing “the releasee’s interest in his constitutionally guaranteed right to confrontation against the Government’s good cause for denying it,” Comito, 177 F.3d at 1170; (3) hearsay exceptions do not eliminate having to engage in full Comito balancing; and (4) the State did not demonstrate compliance with paragraph 24 of the Injunction.2 In its March 2008 order, the district court fully adopted the Special Master’s conclusions and recommendations. The State subsequently filed this timely appeal.
The March 2009 order
Following passage of Proposition 9, Plaintiffs moved the district court to enforce the Injunction and bar implementation of Proposition 9 due to its conflict with the Injunction. The State countered with a motion to modify the Injunction to conform to Proposition 9.
After oral argument, the district court issued its March 2009 order, granting, in part, Plaintiffs’ motion to enforce the Injunction, and denying the State’s motion to modify it. The district court found that while several provisions of Proposition 9 conflict with the Injunction, application of the Supremacy Clause meant the Injunction prevails over state law, to the extent of any conflict. Modification was also not warranted, according to the district court, because Proposition 9 did not constitute a change in applicable law or facts. The court did not reach whether Proposition 9 violates the U.S. Constitution. The State then filed this timely appeal of the March 2009 order, and the two appeals were consolidated.
JURISDICTION
We have jurisdiction over the appeal of both orders pursuant to 28 U.S.C. § 1292(a)(1).
[988]*988Because the March 2008 order modifies an existing injunction, it is immediately appealable under 28 U.S.C. § 1292(a)(1). See Gon v. First State Ins. Co., 871 F.2d 863, 865-66 (9th Cir.1989). It also fulfills the three-part test of Thompson v. Enomoto, 815 F.2d 1323, 1326-27 (9th Cir.1987). First, it “ha[d] the practical effect of the grant or denial of an injunction”: it added the recommendations of the Special Master to the Injunction and mandated them, including the qualitative assessment and training of Deputy Commissioners and the Special Master’s new role as a moderator and supervisor. See id. Second, it had “serious, perhaps irreparable consequences,” id., such as the possible contravention of Supreme Court precedent by imposing “numerous ... costly obligations” on the State, including additional required training and monitoring programs. Cf. Negrete v. Allianz Life Ins. Co. of N. Am., 523 F.3d 1091, 1097 (9th Cir.2008) (finding serious consequences where “none of the other cases in which Allianz is, or may be, involved can be settled by or in the other courts in which they are located absent permission of Negrete Counsel and the court in this case”). Finally, it “can only be challenged by immediate appeal because if[the State] awaits the final determination of this case” the damage to hearsay determinations in parole hearings, and the cost of monitoring the Deputy Commissioners, will have already accrued. See id. It is unclear how long this litigation, which began over 15 years ago, will continue before a final judgment issues. “A decision by us months or years after that cannot repair the damage.” Id.
The March 2009 order is appealable, as both parties concede, under 28 U.S.C. § 1292(a)(1), as the State is appealing an order refusing to modify an injunction.
STANDARD OF REVIEW
The district court’s March 2008 order adopted the Special Master’s report and recommendations in its entirety. The legal conclusions of a Special Master are reviewed de novo. See United States v. Clifford Motley Family Trust, 354 F.3d 1154, 1163 n. 10 (9th Cir.2004). Factual findings of a Special Master are entitled to deference and reviewed for clear error. See Labor/Cmty. Strategy Ctr. v. Los Angeles County Metro. Transit Auth., 263 F.3d 1041, 1049 (9th Cir.2001).
“[Mjatters of discretion,” such as evidentiary rulings and interpretations of the Federal Rules of Civil Procedure, are reviewed for abuse of discretion. Harman v. Apfel, 211 F.3d 1172, 1175 (9th Cir.2000). Under this standard, a reviewing court cannot reverse absent a definite and firm conviction that the district court committed a clear error of judgment in the conclusion it reached upon a weighing of relevant factors. SEC v. Coldicutt, 258 F.3d 939, 941 (9th Cir.2001). Motions for relief from judgment under Fed.R.Civ.P. 60(b), such as the one present in the appeal of the March 2009 order, are reviewed for abuse of discretion. See United States v. Asarco Inc., 430 F.3d 972, 978 (9th Cir.2005).
ANALYSIS
I. The March 2008 Order
The State argues the district court erred in applying the Comito test to parole revocation hearings via the March 2008 order. It contends any hearsay evidence falling under a traditional or long-standing exception ought not to be subject to the Comito balancing test, based on this court’s holding in Hall, 419 F.3d 980. This argument, however, fails. The law of this circuit is clear: the Comito test remains central to confrontation rights in parole [989]*989hearings. The district court did not err in subjecting the State’s parole revocation hearings to these requirements.
A. Nature of the confrontation rights of parolees
We begin by noting that parole revocation hearings are “not part of a criminal prosecution and thus the full panoply of rights due a [criminal] defendant” are not due a parolee. Mortissey, 408 U.S. at 480, 92 S.Ct. 2593. Nonetheless, parolees are due certain “minimum requirements of due process,” including the right to confront witnesses. Id. at 488-89, 92 S.Ct. 2593. These rights, however, are based in the Due Process Clause of the Fourteenth and Fifth Amendments and not in the Confrontation Clause of the Sixth Amendment and its articulation in the Crawford line of cases.3 Hall, 419 F.3d at 985-86 (“We, like the two circuits that have also addressed this question, see no basis in Crawford or elsewhere to extend the Sixth Amendment right of confrontation to supervised release proceedings.”) (referencing Crawford v. Washington, 541 U.S. 36, 124 S.Ct. 1354, 158 L.Ed.2d 177 (2004)).
In Comito, this court specified the test for the confrontation rights of parolees. “[I]n determining whether the admission of hearsay evidence violates the releasee’s right to confrontation in a particular case, the court must weigh the releasee’s interest in his constitutionally guaranteed right to confrontation against the Government’s good cause for denying it.” 177 F.3d at 1170. The weight given to a parolee’s right to confrontation is assessed by two non-exhaustive factors: “the importance of the hearsay evidence to the court’s ultimate finding and the nature of the facts to be proven by the evidence.” Id. at 1171. If the hearsay evidence is not important to the finding of a violation, the error in admitting the hearsay evidence can be considered harmless, but is still subject to the good cause analysis. Id. at 1171-72.
Here, in the Injunction, the district court ordered the State to follow Comito and limit the use of hearsay evidence to the boundaries set by parolees’ confrontation rights. The Special Master, and in turn the district court, did not err in the determination that Comito balancing continues to be the test in the Ninth Circuit, and that even if hearsay falls within a recognized exception, it is still subject to Comito balancing.
B. United States v. Hall
In Hall, the parolee was faced with hearsay evidence from a non-available declarant. After “[balancing the Comito factors,” the court found that the parolee had “little interest in confrontation ... because [the declarant’s out-of-court statements] w[ere] insignificant to the ultimate finding[,]” and were “outweighed by the government’s substantial showing of good cause” for failing to produce the declarant at the hearing. Hall, 419 F.3d at 989. While the hearsay exception evidence lessened “the importance of [the declarant’s out-of-court statements] to the court’s ulti[990]*990mate finding,” and rendered harmless any error in admitting those out of court statements, id. at 986 & n. 5, the failure to produce the declarant remained subject to analysis of the Government’s good cause explanation, and to full Comito balancing.
The application of a balancing test to the admission of hearsay evidence in parole revocation hearings is not an open question in this circuit.4 See Hall, 419 F.3d at 986; Comito, 177 F.3d at 1170-73; United States v. Walker, 117 F.3d 417, 420-21 (9th Cir.1997); United States v. Simmons, 812 F.2d 561, 564 (9th Cir.1987). Hall did not overrule or modify the Comito balancing test.
C. Hearsay exceptions and Comito balancing
Because the Federal Rules of Evidence do not apply to parole revocation hearings, see Walker, 117 F.3d at 420, evidence falling within enumerated hearsay exceptions is subject to Comito balancing. While, in general, hearsay exception evidence is admissible at trial because of assurances of reliability,5 reliability or “trustworthiness” is included in the Comito “right to confrontation” analysis: less reliable hearsay can contribute to more weight placed on a parolee’s right to confrontation over the government’s good cause. Comito, 177 F.3d at 1171-72 (“Because the hearsay evidence was important to the court’s finding, and because it involved the least reliable form of hearsay, Comito’s interest in asserting his right to confrontation is at its apogee.”). Reliability does not result in automatic admissibility: “Simply because hearsay evidence bears some indicia of reliability does not render it admissible.” Hall, 419 F.3d at 988. Therefore, evidence falling under a hearsay exception does not circumvent the Comito balancing test. It remains a part of it as an “indicia of reliability,” and subject to good cause analysis.
D. Due process rights of parolees
The Comito test does not elevate the due process rights of parolees to those of criminal defendants. Criminal defendants have trial rights, including a jury trial, proof beyond a reasonable doubt, application of the applicable rules of evidence, and Sixth Amendment confrontation rights. Even testimonial hearsay that falls under a “firmly rooted hearsay exception” or bears “particularized guarantees of trustworthiness” may not be admitted against a defendant without confrontation or cross-examination. Crawford, 541 U.S. at 60-68, 124 S.Ct. 1354. These protections stand in firm contrast to the conditional due process rights of parolees, which can be justifiably denied — and hearsay admitted — if the Government’s good cause is sufficient under Comito.
The dissent is concerned that the admission of hearsay exception evidence against a criminal defendant “is a foregone conclusion” while such evidence would be admissible in a parole revocation hearing once it is subject to a showing of “good cause.” Dissenting Op., at 997. Hearsay evidence that is testimonial in nature, however, regardless of any exceptions, is inadmissible against a criminal defendant under Crawford. However, both testimonial and non-[991]*991testimonial hearsay are admissible against a parolee, provided the hearsay fulfills Comito balancing. Moreover, the admission of hearsay evidence falling within an exception against a criminal defendant is not a foregone conclusion; all hearsay evidence is subject to Fed.R.Evid. 403 balancing (whether the evidence is more prejudicial than probative). The Federal Rules of Evidence, and such prejudicial/probative weighing, do not govern parole revocation hearings, see United States v. Walker, 117 F.3d 417, 421 (9th Cir.1997), and therefore do not protect parolees as they do criminal defendants.
Raising an argument neither party raised in this appeal, the dissent also contends we have failed to define hearsay. See Dissenting Op., at 997. California parole revocation proceedings, however, are governed by state law whose hearsay definitions would apply. Contrary to the dissent’s characterization, we are not “mandating” applicable hearsay law, or attempting to redefine it, see Dissenting Op., at 997, but merely ensuring that state procedures comport with federal due process per the law of this circuit.
The district court, therefore, did not err in subjecting the State’s parole revocation hearings to the Comito balancing requirements.6 Comito balancing remains the framework for confrontation rights in parole revocation hearings, and does not elevate the due process rights of parolees over those of criminal defendants.
E. Corroborating hearsay with hearsay
The Special Master recommended, and the district court adopted the ruling, that “[hjearsay cannot be used to corroborate proffered hearsay unless it, too, survives a Comito balancing test.” The district court did not err in this determination.
Neither Comito nor Hall offer a clear rule on whether other hearsay evidence can be used to corroborate or support the reliability of proffered hearsay in a parole revocation hearing without being subject to a balancing test. The court in Comito specifically declined to consider the admissibility of the underlying hearsay. 177 F.3d at 1169 (“While the additional evidence may also be subject in whole or in part to valid objections based on hearsay and Comito’s right to confrontation, those challenges are not raised before us.”). While the court in Hall did not subject the underlying hearsay to any sort of balancing test, it did not articulate a particular rule as to whether or when a balancing test should be employed. See 419 F.3d at 987.
We affirm, therefore, not because Hall and Comito hold that “on balance ... these courts expect corroboration to come [992]*992from competent evidence,” but because of the Supreme Court’s description in Morrissey of the due process rights of parolees.
The basic question we face here is whether the government should be required to provide good cause for the absence of the declarant in the underlying hearsay statement that it seeks to use as an indicia of reliability. To satisfy due process, Morrissey requires the State to demonstrate good cause. The Court in Morrissey considered the rights described in its opinion to be a floor — the basic, minimal rights afforded to parolees by due process. Morrissey, 408 U.S. at 488-89, 92 S.Ct. 2593 (“Our task is limited to deciding the minimum requirements of due process.”). Among these rights is “the right to confront and cross-examine adverse witnesses (unless the hearing officer specifically finds good cause for not allowing confrontation).” Id. at 489, 92 S.Ct. 2593. The good cause balancing of Comito for all hearsay fits comfortably with Morrissey’s basic minimum due process guarantees for parolees. Admitting hearsay without the good cause analysis does not.
The dissent’s concern that we have exceeded Morrissey’s “minimum requirements,” 408 U.S. at 488-89, 92 S.Ct. 2593, see Dissenting Op. at 998, is a concern not with our opinion, but with Comito itself, which states:
Under Morrissey, every releasee is guaranteed the right to confront and cross-examine adverse witnesses at a revocation hearing, unless the government shows good cause for not producing the witness. This right to confrontation ensures that a finding of a supervised release violation will be based on verified facts. Accordingly, in determining whether the admission of hearsay evidence violates the releasee’s right to confrontation in a particular case, the court must weigh the releasee’s interest in his constitutionally guaranteed right to confrontation against the Government’s good cause for denying it.
177 F.3d at 1170 (internal citations omitted). While Comito could be construed as going beyond the minimal requirements espoused in Morrissey, we are not bound to adhere only to minimal requirements; Comito is not inconsistent with those requirements, and no intervening precedent has arisen since Comito, either in our circuit or in the Supreme Court, to suggest otherwise.7
In addition, allowing hearsay that does not pass Comito balancing to be considered in the determination of a statement’s reliability seems contrary to this Circuit’s holding in Hall. Hall did say that “longstanding exceptions to the hearsay rule that meet more demanding requirements for criminal prosecutions should satisfy the lesser standard of due process accorded the respondent in a revocation hearing.” Hall, 419 F.3d at 987 (emphasis added). Should satisfy, however, does not mean “do satisfy.” The court in Hall, after making this statement, went on to subject Hall’s medical records, which fell under the business records exception to the hearsay rule (Fed.R.Evid.803(6)), to Comito balancing, weighing “Hall’s interest in excluding hearsay evidence ... against the government’s good cause for not producing [the witness].” Id. Thus, following this circuit’s example in Hall, and the reason[993]*993ing of Morrissey and Comito, we believe that hearsay used to corroborate other hearsay remains subject to Comito balancing. The process nonetheless remains “flexible enough to consider evidence ... that would not be admissible in an adversary criminal trial.” Id. (citing Morrissey, 408 U.S. at 489, 92 S.Ct. 2593).
The State argues that subjecting all hearsay to this balancing test is too arduous a burden, eliminating the “flexibility” Morrissey, id., seems to embrace. Comito itself, however, allows for the admission of testimonial evidence not normally admissible in criminal trials. While Crawford restricts the use of certain unauthenticated evidence, Crawford, 541 U.S. at 61, 124 S.Ct. 1354, in a parole revocation hearing, under the Comito balancing test, testimonial hearsay evidence is admissible against a parolee without the testimony of a declarant, provided the government demonstrates the requisite good cause for its inability to produce the declarant.
Therefore, subjecting underlying hearsay to the Comito balancing test conforms with Morrissey and our precedent, and the district court did not err in adopting this recommendation of the Special Master on this record.
F. Morrissey and Other Obligations Imposed on the State
Other obligations imposed on the State by the March 2008 order, including professional training for Deputy Commissioners, do not contravene the Supreme Court’s determination that a hearing body need not necessarily be composed of judicial officers or lawyers. Morrissey, 408 U.S. at 486, 92 S.Ct. 2593. Nor does the imposed disciplinary system contravene Morrissey’s directive that hearing officers remain “neutral and detached.” Id. at 489, 92 S.Ct. 2593.
The March 2008 order not only encourages the neutral, detached behavior envisioned by Morrissey, but also increases the experience and training of the officers. Nor does it mandate an entire body filled with judicial officers or lawyers, which was the Court’s fear in Morrissey. Id. at 486, 92 S.Ct. 2593 (“The independent officer need not be a judicial officer.”) (emphasis added).
While the State was not found to have violated the Injunction, the Special Master found that the State had not fully complied with its requirements. Where the state has not “fully complied with the court’s earlier orders,” the district court has “ample authority to go beyond earlier orders.” Hutto v. Finney, 437 U.S. 678, 687, 98 S.Ct. 2565, 57 L.Ed.2d 522 (1978); see also Toussaint v. McCarthy, 801 F.2d 1080, 1087 (9th Cir.1986) (“a federal court must order effective relief’ and a “defendant’s history of noncompliance with prior orders is a relevant factor in determining the necessary scope of an effective remedy”). Here, in implementing a disciplinary system, the district court was merely attempting to ensure compliance with the Injunction and was therefore not limited by its earlier orders. The obligations imposed by the district court here, therefore, do not constitute error in contravention of court precedent.
G. Dismissal of the State’s Objections
The district court did not err in dismissing the State’s objections to the evidence presented in the Special Master’s report. While the State has argued several potential evidentiary errors in its briefs, we address here only those for which the State has provided support as opposed to mere conjecture.
Evidentiary rulings are reviewed for abuse of discretion, and should not be reversed unless, more probably than not, the error tainted the outcome. Harman, [994]*994211 F.3d at 1175; Gribben v. United Parcel Serv., Inc., 528 F.3d 1166, 1172 (9th Cir.2008); Fed.R.Evid. 103(a). In addition, we may affirm the district court’s decision to admit evidence on any basis in the record, so long as the issue has been briefed. United States v. Vizcarra-Martinez, 66 F.3d 1006, 1011 (9th Cir.1995) (“court of appeals may affirm a decision to admit evidence on a different ground than that relied upon by the district court as long as the issue has been fully briefed on appeal, and there is sufficient basis in the record for us to address it” (internal quotation marks omitted)). The Special Master did not improperly use judicial notice, nor rely on inadmissible hearsay to support his findings.
The Special Master did not use judicial notice to bypass the process of authenticating documents on which he relied. Transcripts were submitted as evidence, but the original tapes remained in the State’s custody. For the State to challenge the authenticity of transcripts to which they have the original tapes defeats the purpose of the evidentiary rule. Plaintiffs attempted to obtain the tapes from the State; when they were declined, they resorted to transcripts.8 Plaintiffs were not required to submit the originals for authentication in court, and the State never challenged their authenticity in court, rendering judicial notice possible.9
Judicial notice is used to supplant authentication of “adjudicative facts”' — '“simply the facts of the particular case.” Fed. R.Evid. 201, Advisory Committee Notes. Stated another way, “the adjudicative facts are those to which the law is applied in the process of adjudication. They are the facts that normally go to the jury. They relate to the parties, their activities, their properties, their businesses.” Id. (citations omitted). The authenticity of these transcripts was not challenged by either party. Thus judicial notice was proper, and the Special Master correctly admitted and relied upon the transcripts.
Additionally, the Special Master’s findings were based not on inadmissible hearsay, but rather on observations by employees and observers, statements based in personal knowledge that were not out-of-court statements. For these reasons, we affirm the district court’s March 2008 order adopting the Special Master’s report and recommendations.
II. The March 2009 Order
The district court, in its March 2009 order, denied modification of the Injunction to conform with California’s Proposition 9. While the court correctly found the State had not met its burden to show a significant change in circumstances normally necessary for modification under Rufo v. Inmates of Suffolk County Jail, 502 U.S. 367, 384, 112 S.Ct. 748, 116 L.Ed.2d 867 (1992), such a showing may not have been necessary in light of federalism principles. The district court made no express determination that the Injunction’s procedures were necessary to remedy federal constitutional violations, and did not expressly find any aspect of the California parole revocation procedures, as [995]*995modified by Proposition 9, in violation of basic constitutional rights.
A district court may refuse to modify a federal injunction in light of a given state law where such a law violates federal law. See Clark v. Coye, 60 F.3d 600, 605 (9th Cir.1995). However, merely finding that a state law conflicts with a federal injunction, such as the court found here, is insufficient to deny modification of the injunction, and “clearly constitute^] an abuse of discretion.” Id. (“In the case before us, Bill 35 was held to be inconsistent with the terms of the injunction, not with the federal law upon which the injunction was based. The district court has never concluded that Bill 35 violates federal law. It is irrelevant whether Bill 35 frustrates the broad purpose of the district court’s injunction.”).
Further, while the Injunction was put in place to remedy claimed constitutional violations, it is not clear that these procedures were required to remedy the violation of basic constitutional rights. The district court made this clear in the hearing prior to issuing the March 2009 order:
[I]n this case I never found any of the things that now everybody is concerned about, whether they were consistent with the Constitution of the United States or not.....What I found was that the parties had agreed to get rid of this lawsuit. There dearly were some procedures ivhich were violative of the Federal Constitution, and they said, “Look, we’re going to solve this whole problem, and we, the plaintiffs, will give away some of our constitutional rights in order to gain these other rights.”.... It isn’t really true that this Court made a determination that these specific procedures were required by the Federal Constitution. The Court said, ‘You guys are happy, I’m happy.”
While these procedures were put in place in an attempt to remedy a claimed constitutional violation, they were not necessary or required by the Constitution. There is no indication anywhere in the record that these particular procedures are necessary for the assurance of the due process rights of parolees.
This circuit’s law is clear: unless a state law is found to violate a federal law, or unless the Injunction is found necessary to remedy a constitutional violation, federalism principles require the reconciliation of the state law and federal injunctions. See Keith v. Volpe, 118 F.3d 1386, 1393-94 (9th Cir.1997) (finding state law prevailed, and vacating injunction, where no determination made by district court that the injunction was necessary to remedy a constitutional violation); Clark, 60 F.3d at 604 (“[T]he scope of federal injunctive relief against an agency of state government must always be narrowly tailored to enforce federal constitutional and statutory law only.”). Therefore, we vacate and remand the March 2009 order for the court to reconcile Proposition 9 with the Injunction.
CONCLUSION
We affirm the district court’s March 2008 order, as we are bound by Comito. Because the district court made no express determination that any aspect of the California parole revocation procedures, as modified by Proposition 9, violated constitutional rights, or that the Injunction was necessary to remedy a constitutional violation, we vacate and remand the March 2009 order for the district court to make that determination and reconcile the Injunction with California law as expressed in Proposition 9.
AFFIRMED IN PART; VACATED AND REMANDED IN PART.
Each party to bear its own costs on appeal.